[Source] Nut butter was a type of butter made using nuts which could be served in cafés. The voice of an individual speaking with a mouthful of nut butter sounded muffled and sticky, and when the Jedi Knight Luke Skywalker first met the Givin mathematician Drusil Bephorin after she had been sitting at a café on the planet Denon he wondered if her voice sounded muffled and sticky because she had consumed nut butter at the café.